iris for FWB 600

quackdog · Post by **quackdog** » Thu Aug 11, 2011 1:08 am

I just bought a used FWB 600.
Will the front sight accept 18 mm adjustable irises like Gehmann and Anschutz?
Will the rear sight accept a Gehmann 510 adjustable iris?
Thanks for the help.

JSBmatch · Post by **JSBmatch** » Thu Aug 11, 2011 7:22 am

The FWB 600 was fitted with a 16-mm fore sight tunnel, [unless of course some one has changed that] Later 601 models were fitted with 18-mm tunnels, and 603 models onwards were 22-mm

The Gehmann rear sight iris should screw on to the back sight.

JSB

justadude · Post by **justadude** » Thu Aug 11, 2011 10:51 am

But the good news is that if you have the older 16mm front sight tunnel the entire front sight can be replaced with either an 18 or 22mm unit. I know Centra makes them for sure, I am not sure about Gehmann. I would also expect Feinwerkbau could supply one.

How do you tell, remove the aperature, if the entire aperature measures just over 5/8 diameter across it is 16mm, if just over 11/16th of an inch it is 18mm.

'Dude